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comparison mupdf-source/thirdparty/harfbuzz/src/OT/Layout/GPOS/SinglePos.hh @ 2:b50eed0cc0ef upstream

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ADD: MuPDF v1.26.7: the MuPDF source as downloaded by a default build of PyMuPDF 1.26.4. The directory name has changed: no version number in the expanded directory now.
author Franz Glasner <fzglas.hg@dom66.de>
date Mon, 15 Sep 2025 11:43:07 +0200
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1:1d09e1dec1d9 2:b50eed0cc0ef
1 #ifndef OT_LAYOUT_GPOS_SINGLEPOS_HH
2 #define OT_LAYOUT_GPOS_SINGLEPOS_HH
3
4 #include "SinglePosFormat1.hh"
5 #include "SinglePosFormat2.hh"
6
7 namespace OT {
8 namespace Layout {
9 namespace GPOS_impl {
10
11 struct SinglePos
12 {
13 protected:
14 union {
15 HBUINT16 format; /* Format identifier */
16 SinglePosFormat1 format1;
17 SinglePosFormat2 format2;
18 } u;
19
20 public:
21 template<typename Iterator,
22 hb_requires (hb_is_iterator (Iterator))>
23 unsigned get_format (Iterator glyph_val_iter_pairs)
24 {
25 hb_array_t<const Value> first_val_iter = hb_second (*glyph_val_iter_pairs);
26
27 for (const auto iter : glyph_val_iter_pairs)
28 for (const auto _ : hb_zip (iter.second, first_val_iter))
29 if (_.first != _.second)
30 return 2;
31
32 return 1;
33 }
34
35 template<typename Iterator,
36 typename SrcLookup,
37 hb_requires (hb_is_iterator (Iterator))>
38 void serialize (hb_serialize_context_t *c,
39 const SrcLookup* src,
40 Iterator glyph_val_iter_pairs,
41 const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map,
42 bool all_axes_pinned)
43 {
44 if (unlikely (!c->extend_min (u.format))) return;
45 unsigned format = 2;
46 ValueFormat new_format = src->get_value_format ();
47
48 if (all_axes_pinned)
49 new_format = new_format.drop_device_table_flags ();
50
51 if (glyph_val_iter_pairs)
52 format = get_format (glyph_val_iter_pairs);
53
54 u.format = format;
55 switch (u.format) {
56 case 1: u.format1.serialize (c,
57 src,
58 glyph_val_iter_pairs,
59 new_format,
60 layout_variation_idx_delta_map);
61 return;
62 case 2: u.format2.serialize (c,
63 src,
64 glyph_val_iter_pairs,
65 new_format,
66 layout_variation_idx_delta_map);
67 return;
68 default:return;
69 }
70 }
71
72 template <typename context_t, typename ...Ts>
73 typename context_t::return_t dispatch (context_t *c, Ts&&... ds) const
74 {
75 TRACE_DISPATCH (this, u.format);
76 if (unlikely (!c->may_dispatch (this, &u.format))) return_trace (c->no_dispatch_return_value ());
77 switch (u.format) {
78 case 1: return_trace (c->dispatch (u.format1, std::forward<Ts> (ds)...));
79 case 2: return_trace (c->dispatch (u.format2, std::forward<Ts> (ds)...));
80 default:return_trace (c->default_return_value ());
81 }
82 }
83 };
84
85
86 template<typename Iterator, typename SrcLookup>
87 static void
88 SinglePos_serialize (hb_serialize_context_t *c,
89 const SrcLookup *src,
90 Iterator it,
91 const hb_hashmap_t<unsigned, hb_pair_t<unsigned, int>> *layout_variation_idx_delta_map,
92 bool all_axes_pinned)
93 { c->start_embed<SinglePos> ()->serialize (c, src, it, layout_variation_idx_delta_map, all_axes_pinned); }
94
95
96 }
97 }
98 }
99
100 #endif /* OT_LAYOUT_GPOS_SINGLEPOS_HH */